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Of the following compounds the most acidic is

As2O3
P2O5
Sb2O3
Bi2O3
Additional Questions

The brown ring test for nitrates depends on

Answer

Which of the following is used to prepare Cl2 gas at room temperature from concentrated HCl?

Answer

Which one of the following is not true at room temperature andpressure

Answer

The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence:

Answer

Which statement is NOT correct about fullerene C60?

Answer

Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O?

Answer

In which of the following compounds, nitrogen exhibits highest oxidation state?

Answer

Three reactions involving H2PO
4
are given below

(i) H3PO4 + H2O → H3O+ + H2PO
4

(ii) H2PO
4
+ H2O → HPO2–
4
+ H3O+

(iii) H2PO
4
+ OH → H3PO4 + O2–

In which of the above does H2PO
4
act as an acid?

Answer

Which noble gas is most abundant in atmosphere?

Answer

The correct order of increasing bond angles in the following species is

Answer
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